Which statement  best  represents how structure relates to function?

a horse's mane is often black.

some insects live longer than others.

many tropical birds can be taught to speak.

great white sharks have sharp serrated teeth for tearing into their prey.

This patient undergoes a gallbladder sonogram due to epigastric pain. the report indicates that the visualized portions of the liver are normal. no free fluid noted within morisons pouch. the gallbladder is identified and is empty no evidence of wall thickening or surrounding fluid is seen there is no ductal dilation. the common hepatic duct and common bile duct measure 0.4 and 0.8 cm respectively. the common bile ductmeasurement is at the upper limits of normal what cpt code in icd-10 cm code was used